package Io;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class FOSDemo {
    public static void main(String[] args) throws IOException {
        File file=new File("abs.txt");
        FileOutputStream fos=new FileOutputStream(file,true);
        fos.write(1);
        fos.write(-1);
        fos.write(256);
        fos.close();
    }
}
